An apparatus comprising a data framer comprising a physical layer protocol stack comprising a coax convergence layer, a coax framing layer next to the convergence layer, wherein the coax framing layer is configured to decompose and assemble data packets in a coax network, a coax coding layer next to the coax frame layer, wherein the coax coding layer is configured to protect the coax transmissions from impairments, a coax modulation layer next to the coax coding layer, wherein the coax modulation layer is configured to modulate the data according to a coax physical layer (PHY), and a radio frequency layer next to the coax modulation layer and configured to interface to an electrical medium for a coaxial network.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method comprising: receiving a gate message from an Optical Line Terminal (OLT), wherein the gate message comprises a Logical Link Identifier (LLID), a grant start time, and a grant length; calculating an uplink symbol offset based on the grant start time; calculating an uplink symbol number based on the uplink symbol offset; searching empty Physical Resource Blocks (PRB) in the uplink symbol number in an uplink PRB table; and allocating uplink PRBs to the LLID according to the grant length specified in the gate message.
2. The method of claim 1 , wherein calculating the uplink symbol number comprises adding the uplink symbol offset to a current value of an uplink symbol counter.
3. The method of claim 1 , wherein the uplink PRB table comprises information regarding bits per uplink PRB for each LLID.
4. The method of claim 3 , wherein the bits per uplink PRB change according to dynamic coax plant conditions.
5. The method of claim 3 , wherein the bits per uplink PRB depend on at least one of a signal-to-noise ratio (SNR) and a bit error rate (ER).
6. The method of claim 1 , further comprising: retrieving an Ethernet frame from a frame buffer; searching empty downlink PRBs in a next downlink symbol in a downlink PRB table; and allocating a set of downlink PRBs to the LLID according to a length of the Ethernet frame.
7. The method of claim 6 , wherein each of the uplink PRBs and each of the downlink PRBs comprises multiple modulation profiles.
8. The method of claim 6 , wherein the downlink PRB table comprises information regarding bits per downlink PRB for each LLID.
9. The method of claim 8 , wherein the bits per downlink PRB change according to dynamic coax plant conditions.
10. The method of claim 8 , wherein the bits per downlink PRB depend on at least one of a signal-to-noise ratio (SNR) and a bit error rate (ER).
11. An apparatus comprising: a memory; a processor coupled to the memory, wherein the memory includes instructions that when executed by the processor cause the apparatus to perform the following: receive a gate message from an Optical Line Terminal (OLT), wherein the gate message comprises a Logical Link Identifier (LLID), a grant start time, and a grant length; calculate an uplink symbol offset based on the grant start time; calculate an uplink symbol number based on the uplink symbol offset; search empty Physical Resource Blocks (PRB) in the uplink symbol number in an uplink PRB table; and allocate uplink PRBs to the LLID according to the grant length specified in the gate message.
12. The apparatus of claim 11 , wherein calculating the uplink symbol number comprises adding the uplink symbol offset to a current value of an uplink symbol counter.
13. The apparatus of claim 11 , wherein the uplink PRB table comprises information regarding bits per uplink PRB for each LLID.
14. The apparatus of claim 13 , wherein the bits per uplink PRB change according to dynamic coax plant conditions.
15. The apparatus of claim 13 , wherein the bits per uplink PRB depend on at least one of a signal-to-noise ratio (SNR) and a bit error rate (ER).
16. A coaxial media converter (CMC) comprising: a physical layer in communication with an Optical Line Terminal (OLT), wherein the CMC is configured to: receive a gate message from the OLT, wherein the gate message comprises a Logical Link Identifier (LLID), a grant start time, and a grant length; calculate an uplink symbol offset based on the grant start time; calculate an uplink symbol number based on the uplink symbol offset; search empty Physical Resource Blocks (PRB) in the uplink symbol number in an uplink PRB table; and allocate uplink PRBs to the LLID according to the grant length specified in the gate message.
17. The CMC of claim 16 , wherein calculating the uplink symbol number comprises adding the uplink symbol offset to a current value of an uplink symbol counter.
18. The CMC of claim 16 , wherein the uplink PRB table comprises information regarding bits per uplink PRB for each LLID.
19. The CMC of claim 18 , wherein the bits per uplink PRB change according to dynamic coax plant conditions.
20. The CMC of claim 18 , wherein the bits per uplink PRB depend on at least one of a signal-to-noise ratio (SNR) and a bit error rate (ER).
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June 5, 2013
May 3, 2016
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